Q2 A single stage nozzled axial flow gas turbine operates with 1000 K total inlet temperature...

Q2 A single stage nozzled axial flow gas turbine operates with 1000 K total inlet temperature and 4.8 bar inlet total pressure with 12 kg/s mass flow rate. The axial velocity throughout the stage is constant at 220 m/s and the blade speed is 350 m/s. The nozzle exit and the rotor exit angles are 65° and 7° respectively. The static pressure at the exit of the stage is 2.5 bar. Assuming equal inlet and exit absolute flow velocities, determine: (i) relative flow angle at rotor inlet; (ii) relative velocity at stage inlet; (iii) relative flow angle at rotor exit; (iv) relative velocity at stage exit; (v) absolute flow velocity; (vi) degree of reaction; and (vii) specific power output of the turbine

Solutions

Expert Solution

samet mamat answered 3 weeks ago

Next > < Previous

Related Solutions

Estimate the number for stages required for the turbine which is a multi-stage axial turbine designed...

Estimate the number for stages required for the turbine which is a multi-stage axial turbine designed with impulse stages and operating with an inlet pressure and temperature of 6 bar and 900 K and outlet pressure of 1 bar. The isentropic efficiency of the turbine is 85 %. All the stages are to have a nozzle outlet angle of 75 degrees and equal inlet and outlet rotor blade angles. Mean blade speed is 250 m/s and the axial velocity is...

An ideal Rankine cycle operates with a turbine inlet pressure of 600 psia and a turbine...

An ideal Rankine cycle operates with a turbine inlet pressure of 600 psia and a turbine inlet temperature of 526 oF. The steam is isentropically expanded through the turbine to 15 psia as illustrated on the T-s diagram shown below. Using the Mollier diagram, determine the enthalpy at the turbine inlet, in BTU/lbm, under these operating conditions. State your answer in whole numbers.

An ideal Rankine cycle operates with a turbine inlet pressure of 900 psia and a turbine...

An ideal Rankine cycle operates with a turbine inlet pressure of 900 psia and a turbine inlet temperature of 572 oF. The steam is isentropically expanded through the turbine to 5 psia as illustrated on the T-s diagram shown below. Using the Mollier diagram, determine the percent moisture at the turbine outlet under these operating conditions. State your answer in whole numbers.

The temperature and pressure of the steam at the inlet of a high pressure turbine is...

The temperature and pressure of the steam at the inlet of a high pressure turbine is 500 ° C, respectively. It is 12 MPa and 300 ° C and 3MPa at its outlet. If the mass flow of steam is 400 kg / h, how much is the isentropic efficiency of the turbine?

Question 7 An axial flow water Kaplan turbine operates under a head of 2.5 m while...

Question 7 An axial flow water Kaplan turbine operates under a head of 2.5 m while the rotational speed is 75 rpm. The runner tip diameter is 4.8 m and the hub diameter is 2.4 m. The flow rate is 48.5 m3/s and hydraulic efficiency of 93%. Assuming zero whirl at exit, determine: Sketch the inlet and outlet velocity triangles at the MEAN radius and calculate: 1.1 The runner blade inlet and exit angles at mean radius. ANS: +/- 74˚...

A regenerative gas turbine with intercooling and reheat operates at steady state (Figure Q2). Air enters...

A regenerative gas turbine with intercooling and reheat operates at steady state (Figure Q2). Air enters the compressor at 100 kPa, 27°C with a mass flow rate of 6 kg/s. The pressure ratio across the two-stage compressor is 10. The pressure ratio across the two-stage turbine is also 10. The intercooler and reheater each operate at 300 kPa. At the inlets to the turbine stages, the temperature is 1127°C. The temperature at the inlet to the second compressor stage is...

In a gas turbine with two-stage compression and expansion, the total pressure ratio is 12. Air...

In a gas turbine with two-stage compression and expansion, the total pressure ratio is 12. Air enters the compressor at a temperature of 320 K and the turbine at a temperature of 1320 K. The isanthropic efficiency of the compressors is 75%, the efficiency of the turbines is 87% and the regenerator is 78%. Considering the change of specific temperatures with temperature; a) back work rate, b) calculate the thermal efficiency of the cycle.

An industrial gas turbine operates at an 8.8:1 pressure ratio and a mass flow of 77...

An industrial gas turbine operates at an 8.8:1 pressure ratio and a mass flow of 77 kg/s. The exhaust temperature is at 437?C and the inlet temperature to the machine is around 1000?C. The machine is to be designed for a constant axial velocity of 200 m/s. (This data is based on the Rolls-Royce Avon, an engine that dates from the 1950s but is still used as low efficiency high reliability engine for stationary power such as pipeline pumping.) For...

An industrial gas turbine operates at an 8.8:1 pressure ratio and a mass flow of 77...

A steam turbine operates with steam at inlet conditions of 3.5 MPa and 3500 C. The...

A steam turbine operates with steam at inlet conditions of 3.5 MPa and 3500 C. The exit stream leave the turbine is at 0.8 MPa and is known to contain a mixture of saturated vapor and liquid. The steam rate through the turbine is 1000 kg/h. A (negligible) fraction of exit stream is bled through a throttle valve to 0.10 MPa and is found to be 1250 C. The measured output of the turbine is 100 kW. a) Determine the...

Subjects